@font-face {
  font-family: 'JetBrains Mono';
  src: url('assets/fonts/JetBrainsMono-400.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('assets/fonts/JetBrainsMono-500.ttf') format('truetype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('assets/fonts/JetBrainsMono-700.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #05070b;
  --bg-elevated: rgba(11, 16, 24, 0.82);
  --bg-strong: rgba(14, 20, 31, 0.94);
  --line: rgba(97, 208, 255, 0.16);
  --line-strong: rgba(97, 208, 255, 0.3);
  --text: #ecf5ff;
  --muted: #98a9c4;
  --accent: #6bd7ff;
  --accent-2: #6dffb3;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
  --radius: 24px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(107, 215, 255, 0.16), transparent 28%),
    radial-gradient(circle at 85% 12%, rgba(109, 255, 179, 0.09), transparent 24%),
    linear-gradient(180deg, #05070b 0%, #0b111b 52%, #06080d 100%);
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

body.nav-scrolled .site-header {
  background: rgba(5, 8, 14, 0.92);
  border-bottom-color: rgba(97, 208, 255, 0.22);
}

body.reduced-motion *,
body.reduced-motion *::before,
body.reduced-motion *::after {
  transition: none !important;
  animation: none !important;
}

.noise,
.glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.noise {
  opacity: 0.12;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 100%);
}

.glow {
  z-index: 0;
  filter: blur(60px);
}

.glow-one {
  top: -20vh;
  left: -10vw;
  width: 46vw;
  height: 46vw;
  background: radial-gradient(circle, rgba(107, 215, 255, 0.22), transparent 62%);
}

.glow-two {
  top: 32vh;
  right: -16vw;
  width: 40vw;
  height: 40vw;
  background: radial-gradient(circle, rgba(109, 255, 179, 0.12), transparent 62%);
}

.container {
  width: min(var(--max-width), calc(100vw - 32px));
  margin: 0 auto;
}

.section {
  position: relative;
  z-index: 1;
  padding: 48px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(5, 8, 14, 0.72);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(14px);
  transition: background 180ms ease, border-color 180ms ease;
}

.brand-bar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
  min-height: 78px;
}

.brand {
  display: inline-grid;
  gap: 2px;
  text-decoration: none;
  color: var(--text);
}

.brand-kicker {
  color: var(--muted);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.brand-name {
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--accent);
}

.brand-copy {
  color: var(--muted);
  font-size: 0.78rem;
}

.site-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.site-nav a,
.menu-toggle {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 10px 14px;
  color: var(--muted);
  text-decoration: none;
  font: inherit;
  font-size: 0.82rem;
  background: transparent;
  transition: color 180ms ease, border-color 180ms ease, background 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-active,
.menu-toggle:hover,
.menu-toggle:focus-visible {
  color: var(--text);
  border-color: var(--line-strong);
  background: rgba(97, 208, 255, 0.08);
  outline: none;
}

.menu-toggle {
  display: none;
  cursor: pointer;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: center;
  padding-top: 72px;
  padding-bottom: 28px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.76rem;
}

h1,
h2,
h3,
p,
ul,
pre {
  margin-top: 0;
}

h1 {
  margin-bottom: 22px;
  font-size: clamp(2.6rem, 7vw, 5.4rem);
  line-height: 0.96;
  letter-spacing: -0.05em;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(1.6rem, 3vw, 2.7rem);
  line-height: 1.08;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.12rem;
  line-height: 1.3;
}

p,
li {
  color: var(--muted);
  line-height: 1.75;
  font-size: 0.95rem;
}

.lead {
  max-width: 62ch;
  margin-bottom: 24px;
  font-size: 1rem;
}

.hero-actions,
.centered-actions,
.meta-pills,
.signal-list,
.doc-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.signal-list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
}

.signal-list li,
.meta-pills span {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.82rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 500;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  outline: none;
}

.button.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #061018;
}

.button.secondary {
  border-color: var(--line-strong);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.hero-panel,
.info-card,
.system-card,
.proof-card,
.delivery-panel,
.doc-link {
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}

.panel-shell,
.info-card,
.system-card,
.proof-card,
.delivery-panel,
.doc-link {
  border-radius: var(--radius);
  padding: 24px;
}

.panel-label,
.system-tag,
.card-index,
.timeline-key {
  display: inline-flex;
  margin-bottom: 16px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--accent);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.runtime-lines {
  display: grid;
  gap: 14px;
}

.runtime-lines div {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 12px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.runtime-lines div:last-child {
  border-bottom: 0;
}

.runtime-lines span {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.runtime-lines strong {
  font-size: 0.92rem;
  line-height: 1.5;
}

.centered {
  max-width: 840px;
  margin: 0 auto 28px;
  text-align: center;
}

.centered-panel {
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.card-grid.three-up,
.proof-grid,
.doc-links {
  display: grid;
  gap: 18px;
}

.card-grid.three-up {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.systems-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.system-card.emphasis {
  grid-column: span 2;
}

.loop-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.loop-row span {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  font-size: 0.84rem;
  color: var(--text);
}

.loop-row .arrow {
  border: 0;
  background: transparent;
  color: var(--accent);
}

.system-card ul {
  padding-left: 18px;
  margin-bottom: 0;
}

.proof-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.proof-card.wide {
  grid-column: span 3;
}

.proof-block {
  margin: 0;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(3, 7, 12, 0.78);
  color: #dff6ff;
  overflow-x: auto;
}

.timeline {
  display: grid;
  gap: 16px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 18px;
  align-items: start;
  padding: 22px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
}

.timeline-item .timeline-key {
  margin-bottom: 0;
  justify-self: start;
}

.doc-links {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.doc-link {
  display: grid;
  gap: 8px;
  color: inherit;
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.doc-link:hover,
.doc-link:focus-visible {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  background: var(--bg-strong);
  outline: none;
}

.doc-link strong {
  color: var(--text);
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 560ms ease, transform 560ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero,
  .systems-layout,
  .proof-grid,
  .card-grid.three-up,
  .doc-links {
    grid-template-columns: 1fr;
  }

  .system-card.emphasis,
  .proof-card.wide {
    grid-column: auto;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .brand-bar {
    grid-template-columns: 1fr auto;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .site-nav {
    grid-column: 1 / -1;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding-bottom: 14px;
  }

  body.menu-open .site-nav {
    display: flex;
  }

  .site-nav a {
    text-align: center;
  }

  .hero {
    padding-top: 42px;
  }

  h1 {
    font-size: clamp(2.2rem, 11vw, 3.6rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}